The former Arkansas governor and Republican presidential contender who's known for his social conservatism admonished the alleged shooter in an interview with CNN's Brianna Keilar Sunday on "State of the Union.

Photos:The FBI's most wanted terrorists

Photos:The FBI's most wanted terrorists

Adam Yahiye Gadahn, an alleged al Qaeda propagandist from California, was indicted in 2006 on charges of treason and offering material support for terrorism. He was believed to be killed in January in a U.S. counterterrorism operation.

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Photos:The FBI's most wanted terrorists

Zulkifli bin Hir, also known as Marwan, was killed in January, 2015 by security forces in the Philippines, DNA tests indicate. Marwan, an engineer trained in the United States, was thought to be a leading member of the southeast Asian terror group Jemaah Islamiyah, the FBI said. He was indicted in California in 2007. The indictment accuses him of being a supplier of IEDs to terrorist organizations, and having conducted bomb-making training for terror groups, including the Philippines-based Abu Sayyaf.

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Photos:The FBI's most wanted terrorists

Liban Haji Mohamed, a Somali-American, was arrested in southern Somalia, Somali intelligence officials said March 3. The FBI's list of most wanted terrorists is limited to suspects indicted by federal grand juries. It does not include prominent figures such as ISIS leader Abu Bakr al-Baghdadi and alleged AQAP bomb-maker Ibrahim Al Asiri.

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Photos:The FBI's most wanted terrorists

Adnan G. El Shukrijumah, considered a senior figure in al Qaeda by the FBI, was indicted in New York in 2010 over a plot to bomb the city's subway system. Pakistan's army said it killed him in a December 2014 raid. According to the FBI, suspects on the list will remain wanted unless charges are dropped or they are proven "with 100% accuracy" to be dead.

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Photos:The FBI's most wanted terrorists

Ayman al-Zawahiri, longtime deputy and physician for Osama bin Laden, took over al Qaeda after bin Laden's death in 2011. He was indicted for his alleged role in the 1998 bombings of U.S. Embassies in Africa.

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Saif al-Adel, an Egyptian who is believed to be a high-ranking al Qaeda member, is wanted in connection with the 1998 bombings of two U.S. Embassies in east Africa, the FBI said.

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The FBI is offering up to $5 million for information on Abdul Rahman Yasin. He's alleged to have been a part of the 1993 world Trade Center bombing, which killed six people.

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Joanne Chesimard, a New Yorker now known as "Assata Shakur" and living in Cuba, is wanted in the 1973 killing of Trooper Werner Foerster on the New Jersey Turnpike.

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Photos:The FBI's most wanted terrorists

Daniel Andreas San Diego, an American animal rights activist, is charged with bombing two corporate offices in California in 2003. The blasts caused extensive property damage but no deaths.

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Jehad Mostafa, who was born in Wisconsin and went to college in California, is wanted for his alleged terrorist activities and serving as a member of the Somalia-based al-Shabaab, the FBI said.

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Photos:The FBI's most wanted terrorists

Ahmad Abousamra, who holds dual U.S. and Syrian citizenship, is wanted by the FBI on terrorism charges issued in 2009. They include providing material support to terrorists.

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Jamal al-Badawi is wanted in connection with the bombing of the USS Cole in 2000, which killed 17 U.S. sailors.

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Jaber Elbaneh is charged with providing material support to terrorists as a member of a cell in Lackawanna, New York, the FBI said. He was among those who escaped from a Yemen prison in 2006.

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Muhammad Ahmed Al-Munawar was indicted in Washington for an alleged role in the 1986 hijacking of Pan Am Flight 73 in Karachi, Pakistan, the FBI said. Twenty people were killed.

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Wadoud Muhammad Hafiz Al-Turki was indicted in Washington for an alleged role in the 1986 hijacking of Pan Am Flight 73 in Karachi, Pakistan, the FBI said. Twenty people were killed.

Jamal Saeed Abdul Rahim was indicted in Washington for an alleged role in the 1986 hijacking of Pan Am Flight 73 in Karachi, Pakistan, the FBI said.

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Ramadan Abdullah Shallah, a former instructor at the University of South Florida, was named by the United States as a terrorist in 1995 and indicted in Florida in 2003. He was secretary-general of the Palestinian Islamic Jihad, the FBI said.

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Abd Al Aziz Awda was named by the United States as a designated terrorist in 1995 and indicted in Florida in 2003. The FBI said he is a founder and spiritual leader of the Palestinian Islamic Jihad.

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Mohammed Ali Hamadi, a Hezbollah militant from Lebanon, is wanted in connection with the 1985 hijacking of a U.S. jetliner during which a U.S. Navy diver was killed, the FBI said.

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Hasan Izz-Al-Din, from Lebanon, is also wanted in connection with the 1985 hijacking of TWA Flight 847, the FBI said, during which U.S. Navy diver Robert Stethem was beaten, shot and dumped on a tarmac.

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Ali Atwa, an alleged member of the Lebanese Hezbollah, is also wanted in connection with the 1985 hijacking of TWA Flight 847, the FBI said.

Abdelkarim Hussein Mohamed Al-Nasser was indicted in Virginia in connection with the 1996 bombing of the Khobar Towers in Saudi Arabia. He was the alleged leader of the Saudi Hezbollah, the FBI said.

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Ahmad Ibrahim Al-Mughassil was indicted in Virginia in connection with the 1996 bombing of the Khobar Towers in Saudi Arabia. He was the alleged head of the military wing of the Saudi Hezbollah, the FBI said.

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Ibrahim Salih Mohammed Al-Yacoub was indicted in Virginia in connection with the 1996 bombing of the Khobar Towers in Saudi Arabia. He was an alleged member of the Saudi Hezbollah, the FBI said.

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Abdullah Ahmed Abdullah was indicted for his alleged involvement in the 1998 bombings of the U.S. Embassies in Tanzania and Kenya.

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The U.S. State Department is offering a $5 million reward for Husayn Muhammad Al-Umari, for allegedly making a bomb and placing it on a Pan Am flight in 1982. A 16-year-old was killed and 16 others were injured.

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Photos:The FBI's most wanted terrorists

Raddulan Sahiron, a Filipino, is wanted for his alleged involvement in the kidnapping of an American in the Philippines in 1993, the FBI said.

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Isnilon Totoni Hapilon, an alleged member of the Philippine Islamic Abu Sayyaf rebel group, was indicted in 2002 in connection with the kidnappings and deaths of Americans and Filipinos, the FBI said.

"What he did is domestic terrorism, and what he did is absolutely abominable, especially to us in the pro-life movement, because there's nothing about any of us that would condone or in any way look the other way on something like this," Huckabee said.

"We're not going to have the kind of language that you heard from John Kerry where he talked about legitimizing or rationalizing terrorist actions," Huckabee said. "There's no legitimizing, there's no rationalizing. It was mass murder. It was absolutely unfathomable. And there's no excuse for killing other people, whether it's happening inside the Planned Parenthood headquarters, inside their clinics where many millions of babies die, or whether it's people attacking Planned Parenthood."

Former Arkansas Gov. Mike Huckabee speaks at the Point of Grace Church for the Iowa Faith & Freedom Coalition 2015 Spring Kick Off on April 25, 2015, in Waukee. The Republican is expected to announce May 5 he is running for president.

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Photos:Mike Huckabee's political career

Huckabee was born in the same Arkansas town as former President Bill Clinton. He is an ordained Baptist minister.

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Huckabee, here at a the Iowa Ag Summit in March 2015, served two terms as governor.

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Huckabee, center, visits the Western Wall in Jerusalem on February 1, 2010.

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In 2008, he debuted a weekend show for Fox News titled "Huckabee." He ended the program in early 2015.

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Former Arkansas Gov. Mike Huckabee speaks during the NRA-ILA Leadership Forum in Nashville, Tennessee, in April 2015.

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Former Arkansas Gov. Mike Huckabee delivers remarks to the Conservative Political Action Conference (CPAC) at the Washington Marriott Wardman Park on February 10, 2012.

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Huckabee is surrounded by supporters and members of the news media after talking about his new book, 'A Simple Government: Twelve Things We Really Need from Washington (and a Trillion that We Don't!),' at the National Press Club on February 24, 2011, in Washington, D.C.

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Former Gov. Mike Huckabee signs a copy of his new book, 'A Simple Government: Twelve Things We Really Need from Washington (and a Trillion that We Don't!),' at the National Press Club on February 24, 2011.

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Huckabee attends a corner stone dedication ceremony for a new Jewish settlement in East Jerusalem on January 31, 2011.

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Mike Huckabee speaks to guests at the Iowa Freedom Summit on January 24, 2015, in Des Moines, Iowa.

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The politician plays bass guitar with his band Capitol Offense. T

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The band has opened for Willie Nelson and the Charlie Daniels Band and has played for two presidential inauguration balls.

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Huckabee (second from right), students and others attend the May 14, 2010, NAMM Foundation Wanna Play Fund event at Fox News studios in New York. The initiative, in conjunction with the VH1 Save the Music Foundation, includes instrument donations.

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Huckabee visits the West Bank settlement of Beit El, near Ramallah, on August 18, 2009. He issued controversial statements in support of Israeli settlements.

"This President has shown considerable more intensity of anger toward Republicans than he has toward ISIS," Huckabee said.

"I mean I remember those press conferences -- the one in Manila and the one in Turkey prior to that -- where you could see the visible, visceral anger this President had as he spoke about Republicans. And he was so frustrated that there was not just a universal acceptance of his point of view about relocation of refugees, calling people who disagreed with him as un-American," Huckabee said.

"It was harsh. And I just want him to show the same kind of anger directed toward the ISIS terrorists, and frankly, all the radical Islamists, that we saw from the French President (Francois) Hollande," he said. "That's what we all need to do -- the family of civilized nations needs to get together and we need to destroy them once and for all."